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-rw-r--r--tools/ompipe.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/ompipe.c b/tools/ompipe.c
index 7cf61822..40e9e79b 100644
--- a/tools/ompipe.c
+++ b/tools/ompipe.c
@@ -37,6 +37,7 @@
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>